Mechanical Engineering Book 1 Unit 01 The Mechanical Engineer Video What Is Mechanical Engineering? Mark the following statements as True or False 1 Mechanical engineers have a broad range of skills which give them many career opportunities and choices True False 2 Mechanical engineers do not have to concern themselves with safe operation when designing and testing structures True False 3 The Mechanical Engineering course at Monash is designed around four thematic lines True False 4 Thermo.
Trang 1Mechanical Engineering
Book 1
Unit 01 The Mechanical Engineer
Video: What Is Mechanical Engineering?
Mark the following statements as True or False.
1 Mechanical engineers have a broad range of skills which give them many career opportunities and choices True / False
2 Mechanical engineers do not have to concern themselves with safe operation when designing and testing
structures True / False
3 The Mechanical Engineering course at Monash is designed around four thematic lines True / False
4 Thermodynamics looks at the relationship between work, heat and energy and applies it to fuel and engine
efficiency True / False
5 Dynamics is about the loudness of sound in objects such as engines True / False
6 Mechanical engineers working in the transportation industry might be involved in the aerodynamics of cars,
planes or trains True / False
Key
1 T 2 F 3 T 4 T 5 F 6 T
Unit 04 Gears
Video: Gears
Choose the correct answer.
1 The two major methods of gear machining are …
A Gear Generating and Gear Rotating B Gear Generating and Gear Form-Cutting.
2 Gear Generating is the process of gear cutting which involves some sort of …
A gear motion B rotating motion
3 The helically fluted cutting tool used in the gear generating process is called …
A a hob B a spur
4 The reciprocating cutter used in Shaping …
A may only be pinion-shaped B may have various shapes
5 Internal gears and shoulder gears are made with the use of …
A Gear Shapers B Hobbers.
Trang 26 The production of large course pitch internal or external spur, bevel or helical gears involves a process
called …
A Gashing B Broaching.
Key
1 B 2 B 3 A 4 B 5 A 6 A
Unit 06 Hand Tools
Video: Hand Tools
Mark the following statements as True or False.
1 When using a sledgehammer, you are always required to wear protective gear True / False
2 An overly-used wedge may become mushroomed or flattened out True / False
3 Using a screwdriver with the wrong type of blade, may result in all sorts of damages True / False
4 When installing fasteners, you should use a conventional wrench which is faster than a socket wrench True / False
5 When selecting which socket wrench to use, make sure that the socket fits snugly on the head of the
fastener True / False
6 Pliers can only be used for handling small objects between their two jaws True / False
Key
1 F 2 T 3 T 4 F 5 T 6 F
Unit 07 Machine Tools
Video: Machine Tools – Lathe Workholding
Choose the correct answer.
1 The device which is used to transmit the driving power from the lathe spindle to the work is the …
A bar stock B lathe dog.
2 If the work is taken out of the lathe many times, …
A it can be replaced B it cannot be replaced
3 The jaws on the 4-chuck can be adjusted independently from each other, making it …
A more accurate than the 3-chuck B less accurate than the 3-chuck
4 The 4-chuck is a very versatile tool …
A and requires less effort to set up B but requires more effort to set up
Trang 35 When placing a piece of work in the lathe, you should make sure …
A not to place it too deep into the jaws B to place it as deep as possible into the jaws.
6 A Steady Rest is used for extra support when drilling or boring operations are carried out on the end …
A of a long shaft B of a short shaft.
Key
1 B 2 A 3 A 4 B 5 B 6 A
Unit 15 Simple Machines
Video: Levers
Use the words below to complete the text.
force heavy places fulcrum between applied opposite simple
Levers are 1) _ machines which are used to make moving, lifting or prying things apart an easier task A lever is a solid unbendable bar which rests on a support called a(n) 2) _ Applying force to a lever can move a(n) 3) _ load using less effort Levers are divided into three categories depending
on the position of the fulcrum, load and 4) _ in relation to each other The first class lever, an
example of which are the scissors and the teeter totter, has the fulcrum placed in 5) _ the force and the load The second class lever places the fulcrum and force on 6) _ ends of the bar with the load in the middle A typical second class lever is the wheel barrow Finally, there is the third class lever which 7) _ the fulcrum and the load on the opposite ends of a bar with the force 8) _ in the middle
An example of such a lever is the salad tom
Key
1 simple 2 fulcrum 3 heavy 4 force 5 between 6 opposite 7 places 8 applied
Revision Test
Choose the correct answer.
1 In his old job, he used to … the effectiveness of the old engine models.
A assess B improve C design D broad
2 The engineer was asked to … new parts of the old engine.
A design B transmit C assess D improve
3 When he started studying at the mechanical engineering department, one of the first things they focused on
was to learn how to … machines and components
A transfer B manufacture C invent D improve
4 Jason decided to … in the robotics field.
Trang 4A test B specialize C assess D design
5 The rolling contact bearings have a(n) … ; a metal cylinder that rotates with the shaft.
A inner race B straight roller bearing C ball bearing D thrust roller bearing
6 A journal bearing is a type of bearing in which a shaft is suspended on a thin layer of fluid inside a(n) …
A sleeve B outer race C axial D inner race
7 Conical rollers are used by … , which support radial forces.
A thrust roller bearings B ball bearings C straight roller bearings D tapered roller bearings
8 The rigid couplings will be used to precisely … the shafts with each other.
A align B reduce C bend D transmit
9 … are cut in a spiral shape from one piece of material.
A Output shafts B Input shafts C Beam couplings D Sleeve-style couplings
10 Any shaft receiving power directly from a power source is called a(n) …
A coupling B output shaft C rigid coupling D input shaft
11 … is the state of not being perfectly in line.
A Rigid B Flexible C Offset D Aligned
12 A … is shaped like a partial cone and allows gears to meet at right angles.
A bevel gear B worm gear C helical gear D spur gear
13 Torque is transmitted when gear teeth … together.
A mesh B engage C convert D form
14 Sometimes … convert rotational motion to linear motion.
A worm gears B helical gears C pinion gears D spur gears
15 The … usually pairs with a cylindrical, screw-like machine part.
A spur gear B helical gear C bevel gear D worm gear
16 The rotating shafts were linked with a … , made of a flexible material.
A v-belt B timing belt C belt drive D groove
17 Every timing belt has grooves in order to prevent …
A link B vice C slippage D sheave
18 The belt drive also ensures … , so that the shafts rotate in perfect time with each other.
A chain drive B wedge angle C slippage D synchronous rotation
19 The sheave is a grooved pulley designed to work with a … , made from a reinforced synthetic rubber.
Trang 5A v-belt B chain drive C wedge angle D link
20 A … , used in metalworking, has a rounded end on one side of the head and a flat end on the other.
A sledge hammer B box wrench C hacksaw D ball peen hammer
21 Pass me a … , so I can tighten these screws.
A sledge hammer B hacksaw C box wrench D Phillips screwdriver
22 A … is a tool used to apply torque to screws using a flat tip.
A box wrench B caliper C clotted screwdriver D vice
23 The workman used a … to knock down the wall partition.
A socket wrench B box wrench C hacksaw D sledge hammer
24 The engineer used a … to remove the excess material.
A broach B gear shaper C CNC mill D mill
25 A bench top … is used to vertically drill holes in materials such as wood and metal.
A CNC mill B gear shaper C machine tool D drill press
26 A … is used as a linkage in a machine, and can convert turning motion into linear motion.
A lead screw B mill C machine tool D honing machine
27 Two … eight equals sixteen.
A multiplied by B subtracted C added D minus
28 Ten … two equals five.
A added B multiplied by C divided by D minus
29 … ten and four to get fourteen.
A Subtract B Add C Divide D Multiply
30 … and ounces belong to the imperial measurement units.
A Meters B Kilograms C Pounds D Grams
31 The … of the boat was approximately 5 meters.
A length B pound C volume D weight
32 The approximate … of the new machine was 3.5 tons.
A weight B length C imperial D foot
33 What’s the formula for … meters to feet?
A converting B causing C measuring D weighing
34 You should always measure the volume of the liquids in …
Trang 6A kelvin B liters C degrees D pounds
35 There has been a rise in … over the past few years due to global warming.
A degree B scale C volume D temperature
36 A kilogram is a … used to measure mass.
A base unit B derived unit C length D feet
37 … is a unit for measuring temperature.
A Joule B Newton C Kelvin D Pascal
38 A … is a derived unit that measures pressure.
A joule B force C pascal D cubic meter
39 The rolling contact bearings accommodate different types of … and motion.
A force B temperature C mass D derived unit
40 If a quantity is … , it is multiplied by itself.
A squared B leading zero C rounding error D exponent
41 The … of a number indicates how many times a quantity is multiplied by itself, and is located on the upper
right of the quantity
A integer B exponent C rounding error D trailing zero
42 He was not sure whether the … he wrote in the test was accurate, as it might have caused a rounding error
in his calculations
A scientific notation B trailing zero C leading zero D significant figure
43 A(n) … is a number that contains a decimal point, for instance 0.34.
A improper fraction B fraction C mixed number D decimal number
44 60 … of the students in the physics department are female.
A out B multiplied C percent D divided
45 The fraction 4/6 can be … to 2/3.
A pointed B squared C reduced D multiplied
46 A … arranges data into a series of sections, depicted as bars, the lengths of which are proportional to their
values
A pie chart B line graph C bar graph D table
47 The … is the horizontal line which extends from the left to the right of the graph.
A scatter plot B row C y-axis D x-axis
Trang 748 By dividing a circle into sectors, the student created a … that showed information about the total amount
of replacement costs and how these were divided up
A line graph B table C pie chart D bar graph
49 A(n) … on a fulcrum can easily make an object easier to lift.
A lever B inclined plane C wheel D axle
50 A(n) … was constructed using a wheel and a rope, helping the construction workers lift the heavy load.
A pulley B wedge C inclined plane D load
Key
1 A 2 A 3 B 4 B 5 A 6 A 7 D 8 A 9 C 10 D 11 C 12 A 13 A 14 C 15
D 16 C 17 C 18 D 19 A 20 D 21 D 22 C 23 D 24 A 25 D 26 A 27 A 28 C
29 B 30 C 31 A 32 A 33 A 34 B 35 D 36 A 37 C 38 C 39 A 40 A 41 B 42 A
43 D 44 C 45 C 46 C 47 D 48 C 49 A 50 A
Book 2
Unit 01 Electricity
Video: Measures of Electricity
Choose the correct word.
1 When metals form ions they give away electrons / protons, which have a negative charge.
2 A strip of copper, a strip of zinc metal and a gaussmeter / voltmeter are all components necessary to make
an electrochemical cell
3 In the electrochemical cell, zinc pushes its electrons away from / towards the copper, because zinc is
higher up than copper in the electrochemical series
4 The flow of electrons is the electric current / voltage and it is measured in amps, using an ammeter.
5 A voltmeter measures the flow / force that pushes the electrons through the wire in an electrochemical cell.
6 The further apart the metals connected / touched in an electrochemical cell are in the electrochemical
series, the greater the size of voltage and current produced
Key
1 electrons 2 voltmeter 3 towards 4 current 5 force 6 connected
Unit 04 Rate Processes
Video: Crystallization Processes
Mark the following statements as True or False.
Trang 81 Tools such as FPRM and PVM help develop more robust crystallization processes performing scale up and
scale down experiments True / False
2 With crystallization workstations scientists understand polymorphism better True / False
3 This workstation provides more information for experiments but it is not very efficient True / False
4 Chemists and engineers repeatable crystallization processes with faster cycle times True / False
5 Engineers from University College Dublin use these technologies to optimize mixing and solvent addition
to increase nucleation True / False
6 Researchers at Excella, Germany, applied FPRM to cooling rates and achieved a cycle time reduction of 10
hours True / False
Key
1 T 2 T 3 F 4 T 5 F 6 F
Unit 08 Patents
Video: Patents
Use the words below to complete the text.
using public specific inventor describe include giving inspection
In the United States, the government can grant a(n) 1) _ a patent which gives its owner certain rights over their invention These privileges 2) _ the right to keep others from making, 3) _ or selling the invention A patent lasts for a(n) 4) _ period of time, which does not exceed 20 years
However, for a patent to be awarded the invention has to meet certain requirements The invention must
enhance public knowledge by 5) _ something new and useful to the public The inventor is also obliged to 6) _ the invention in a way that makes its boundaries clear to the public After the patent
is issued it becomes available for public 7) _ When the patent expires, the invention is free for 8)
_ use
Key
1 inventor 2 include 3 using 4 specific 5 giving 6 describe 7 inspection 8 public
Unit 10 Materials
Video: Material Science and Engineering
Mark the following statements as True or False.
1 A materials engineer’s work involves improving the quality of materials we use in our everyday lives True / False
2 The way the particles are arranged in a piece of steel, for example, determines the strength of the material True / False
Trang 93 Material engineers can only determine why a piece failed but cannot make assumptions about future
reactions of materials True / False
4 Materials engineers aim to make materials with the capacity to cater for smaller and lighter electronic
components True / False
5 Scientists are using corn and potatoes to make polymers that bio-degrade True / False
6 Career options for future materials engineers are only found in green technology True / False
Key
1 T 2 T 3 F 4 T 5 T 6 F
Unit 15 Career Options
Video: Why Mechanical / Aerospace Engineering?
Choose the correct answer.
1 Why is Ivana Mowry-Mora interviewing Teresa Saint-Blancard?
A to help her decide what career to pursue B to inform other students about STEM careers
2 Why did Teresa Saint-Blancard study engineering?
A She was influenced by the people in her life B She didn’t know what else to do
3 What obstacles did Ms Saint-Blancard encounter while becoming an aerospace engineer?
A coping with the long difficult classes that she took B coping with the long hours in the businesses she
worked
4 Did Teresa Saint-Blancard face any obstacles because she is a woman?
A Yes, she felt she had to get better grades than all her male colleagues B Yes, she felt intimidated because
most of her colleagues were men
5 What does her current work involve?
A She has a designing role B She has a marketing role.
6 What is her advice to anyone who wants to become an engineer?
A to choose mechanical engineering B to opt for a degree in law or medicine
Key
1 B 2 A 3 A 4 B 5 B 6 A
Revision Test
Choose the correct answer.
Trang 101 … is an electrical current that regularly changes the direction in which it flows.
A Ampere B AC C DC D Watt
2 A … is a closed system of wires and pipes through which electricity or liquid can flow.
A voltage B volt C current D circuit
3 Copper has a lower … than aluminum, making it a better conductor of electricity.
A resistance B charge C watt D voltage
4 The greater the … , the greater the flow of electrical current through a system.
A watt B ohm C voltage D current
5 A reactor is a large machine in which atoms can be either divided or joined in order to generate …
A energy B physics C gravity D motion
6 According to the laws of … every particle of matter in the universe attracts every other particle.
A thermodynamics B quantum field theory C relativistic mechanics D gravity
7 Some scientists claim that there is ten times as much … in the universe as astronomers have observed.
A matter B classical mechanics C speed of light D physics
8 Mechanics is a branch of physics that is concerned with physical objects in …
A motion B speed of light C energy D quantum field theory
9 A(n) … is a physical system that does not allow transfer of mass in or out, so it always maintains the same
amount of mass
A closed system B open system C extensive quantity D generation
10 The … results of the experiment were discouraging, yet the research team continued collecting data,
anticipating a confirmation of their hypothesis
A output B initial C input D final
11 The … is a method applied in open systems for measuring changes in quantities.
A consumption B universal accounting equation C generation D extensive quantity
12 First, the students have to make sure that the mechanism that creates the … has enough fuel to function
normally
A resistance B viscosity C driving force D flux
13 The engineer had to check whether the water was flowing through the water heater at the proper …
A resistance B flux C rate D outlet
14 … is the rate of movement of a quantity of liquid, measured at one particular point in a system, such as
piping